//============================================================================
//Gios Pdf.NET - A library for exporting Pdf Documents in C#
//Copyright (C) 2005  Paolo Gios - www.paologios.com
//
//This library is free software; you can redistribute it and/or
//modify it under the terms of the GNU Lesser General Public
//License as published by the Free Software Foundation; either
//version 2.1 of the License, or (at your option) any later version.
//
//This library is distributed in the hope that it will be useful,
//but WITHOUT ANY WARRANTY; without even the implied warranty of
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
//Lesser General Public License for more details.
//
//You should have received a copy of the GNU Lesser General Public
//License along with this library; if not, write to the Free Software
//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//=============================================================================

using System;

namespace lwzlz.Common.Gios.Pdf
{
    /// <summary>
    /// Represents the Paper Size of each Page of the Document.
    /// </summary>
    public class PdfDocumentFormat
    {
        internal double height, width;
        internal PdfDocumentFormat(double Width, double Height)
        {
            this.height = Height;
            this.width = Width;
        }
        /// <summary>
        /// gets the Classic A4 Letter.
        /// </summary>
        public static PdfDocumentFormat A4
        {
            get
            {
                return PdfDocumentFormat.InCentimeters(21, 29.7);
            }
        }
        /// <summary>
        /// gets the Classic A4 Letter (Horizontal)
        /// </summary>
        public static PdfDocumentFormat A4_Horizontal
        {
            get
            {
                return PdfDocumentFormat.InCentimeters(29.7, 21);
            }
        }
        /// <summary>
        /// gets the 8.5x11 American Letter.
        /// </summary>
        public static PdfDocumentFormat Letter_8_5x11
        {
            get
            {
                return PdfDocumentFormat.InInches(8.5, 11);
            }
        }
        /// <summary>
        /// gets the 8.5x11 American Letter (Horizontal)
        /// </summary>
        public static PdfDocumentFormat Letter_8_5x11_Horizontal
        {
            get
            {
                return PdfDocumentFormat.InInches(11, 8.5);
            }
        }
        /// <summary>
        /// creates a custom inches sized paper.
        /// </summary>
        /// <param name="Width"></param>
        /// <param name="Height"></param>
        /// <returns></returns>
        public static PdfDocumentFormat InInches(double Width, double Height)
        {
            if (Width <= 0) throw new Exception("Width must be grater than zero.");
            if (Height <= 0) throw new Exception("Height must be grater than zero.");
            return new PdfDocumentFormat(Width * 72, Height * 72);
        }
        /// <summary>
        /// creates a custom centimeters sized paper.
        /// </summary>
        /// <param name="Width"></param>
        /// <param name="Height"></param>
        /// <returns></returns>
        public static PdfDocumentFormat InCentimeters(double Width, double Height)
        {
            if (Width <= 0) throw new Exception("Width must be grater than zero.");
            if (Height <= 0) throw new Exception("Height must be grater than zero.");
            return new PdfDocumentFormat(Width * 72 / 2.54, Height * 72 / 2.54);
        }
    }
}
